Could be a corn or callus.
Remove friction: Wear roomy, well-fitting shoes and protective padding or gloves.
Soften skin: Soak the area in warm water for 5 to 10 minutes.
Gently exfoliate: Use a pumice stone or foot file using circular motions—avoid cutting the skin.
Next Steps
rule out
diabetes as it could be one of the reason.
Health Tips
make sure it's not infected